Yeah, somewhere along the line I commented about it. It works but basically it is just a novelty item. My plan is to give it to my sister if she ever gets another bike. Now to someone who might actually consider buying one of these little gems ( *wink*) I would recommend buying the smaller more compact version. That way you could run it with a better more visible rear light. The big one shone in the video above works fine but is butt ugly if you catch my drift. ( and yes that is the one I own )